18516096544 has 48 divisors (see below), whose sum is σ = 39872740320. Its totient is φ = 8394140160.

The previous prime is 18516096527. The next prime is 18516096553. The reversal of 18516096544 is 44569061581.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64012 + ... + 202804.

It is an arithmetic number, because the mean of its divisors is an integer number (830682090).

Almost surely, 2^18516096544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18516096544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19936370160).

18516096544 is an abundant number, since it is smaller than the sum of its proper divisors (21356643776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18516096544 is a wasteful number, since it uses less digits than its factorization.

18516096544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139193 (or 139185 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 18516096544 in words is "eighteen billion, five hundred sixteen million, ninety-six thousand, five hundred forty-four".